题目地址：https://leetcode-cn.com/probl…题目描述：给定一个没有重复数字的序列，返回其所有可能的全排列。 示例: 输入: [1,2,3]输出:[ [1,2,3], [1,3,2],…

  Given a set of candidate numbers (candidates) (without duplicates) and a target num…

  Write a program to find the node at which the intersection of two singly linked lists begins.   Fo…

  Given a string s and a non-empty string p, find all the start indices of …

  For an integer n, we call k>=2 a good base of n, if all digits of n base k are 1. Now given a string…

题目： Given a string, find the length of the longest substring without repeating characters. For example, the lo…

题目： Given an index k, return the kth row of the Pascal’s triangle. For example, given&nbs…

题目： Given a sorted linked list, delete all nodes that have duplicate numbers, leaving only distinct …

Regular Expression Matching Implement regular expression matching with support for '.' and'*'. '.' Matches any…

  Serialization is the process of converting a data structure or object into a sequence of bits so that i…

  Given an array arr that is a permutation of [0, 1, ..., arr.length - 1], we split the ar…

Given a sorted linked list, delete all duplicates such that each element appear only once. Example 1: Input: 1…